Obviously a reference to 9/11. Trump keeps “returning” to this reference over and over again, telling Americans not to get caught in foreign affairs. That being said, he wants to return to the middle east and slash and burn it in revenge.

"Birthday party,"

Donald Trump was born June 14, 1946. As part of his “birthday party”, in May the other GOP candidates dropped out and in July he was nominated as the GOP candidate.

"cheesecake,"

Refers to Trump’s opinion of women.

"jelly beans, boom!"

The GOP was also party of Reagan, who loved jelly beans. That GOP has imploded (gone “boom”) under trump.